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Air and Fuel Delivery > Water Injection System and Components

Water Injection Reservoir

Water / Methanol Injection Flow Gauge

Water / Methanol Injection Mount

Water / Methanol Injection Nozzle

Water / Methanol Injection Pump

Water / Methanol Injection System

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Aluminum Bungs (1)

Fittings (2)

Fuel Fittings and Adapters (2)

Hardware - Singles (1)

Injection Fluid (2)

Injection Pump Components (1)

Injection Pumps & Controllers (10)

Nitrous Filters (1)

Reservoirs (9)

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Water / Methanol Injection (29)

Water Meth Components (14)

Water Meth Kits (24)

Water Meth Nozzles (7)

Water Meth Plates (4)

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Nitrous Express (47)

Snow Performance (61)

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Water Injection System and Components (110)

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Injection Pumps & Controllers (10)

Nitrous Filters (1)

Reservoirs (9)

Sensor Fittings and Adapters (1)

Steel Bungs (1)

Vehicle Parts (1)

Water / Methanol Injection (29)

Water Meth Components (14)

Water Meth Kits (24)

Water Meth Nozzles (7)

Water Meth Plates (4)

Brand

Nitrous Express (47)

Snow Performance (61)

VP Racing (2)

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Air and Fuel Delivery (110)

Product Subcategory

Water Injection System and Components (110)

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2015 (1)

2016 (1)

2017 (1)

2018 (1)

2019 (1)

2020 (1)

Make

Subaru (1)

Model

WRX STI (1)

Submodel

Base (1)

Launch Edition (1)

Limited (1)

S209 (1)

Series.HyperBlue (1)

Sport (1)

Sport-tech (1)

STI (1)

Type RA (1)

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Base

129872 (1)

134792 (1)

140564 (1)

143502 (1)

146850 (1)

148816 (1)

110 products

Nitrous Express Water Injection Low Flow Safety Switch 15040 15040 Photo - Primary

Nitrous Express | MPN: 15040

Nitrous Express Water Injection Low Flow Safety Switch 15040

Sale price$318.91 USD

Nitrous Express Water Injection Gas Stage 3 MPG Max 15028 15028 Photo - Primary

Nitrous Express | MPN: 15028

Nitrous Express Water Injection Gas Stage 3 MPG Max 15028

Sale price$1,419.69 USD

Nitrous Express Water Injection Nozzle Mounting Bung for Steel 15058 15058 Photo - Primary

Nitrous Express | MPN: 15058

Nitrous Express Water Injection Nozzle Mounting Bung for Steel 15058

Sale price$30.88 USD

Nitrous Express Water Injection Gas Stage II MAF 15022 15022 Photo - Primary

Nitrous Express | MPN: 15022

Nitrous Express Water Injection Gas Stage II MAF 15022

Sale price$952.50 USD

Sold out

Nitrous Express | MPN: 15053

Nitrous Express Water Injection Dual Nozzle Upgrade 15053

Sale price$76.80 USD

Sold out

Nitrous Express | MPN: 15052

Nitrous Express Water Injection Level Switch Upgrade w/Red LED 15052

Sale price$59.25 USD

Nitrous Express Water Injection Gas Stage 3 15027 15027 Photo - Primary

Nitrous Express | MPN: 15027

Nitrous Express Water Injection Gas Stage 3 15027

Sale price$1,341.56 USD

Sold out

Nitrous Express Vehicle Parts 15127H-LT4 Item Image

Nitrous Express | MPN: 15127H-LT4

Nitrous Express Water/Methanol System; w/ Billet LT4 Supercharger

Sale price$4,666.56 USD

Sold out

Nitrous Express Water / Methanol Injection 15021 Item Image

Nitrous Express | MPN: 15021

Nitrous Express Water Methanol, Gas Stg II Boost Controlled

Sale price$783.75 USD

Nitrous Express Water Methanol, Nozzle Mounting Bung For Aluminum 15057 Photo - Primary

Nitrous Express | MPN: 15057

Nitrous Express Water Methanol, Nozzle Mounting Bung For Aluminum

Sale price$30.88 USD

Nitrous Express Fuel Fittings and Adapters 15055 Item Image

Nitrous Express | MPN: 15055

5.0

Nitrous Express Water Methanol, Solenoid Upgrade (Fluid Flow) W/Fittings

Sale price$73.45 USD

5.0

Nitrous Express Water Methanol, Gas Stage I Boost 15020 Photo - Primary

Nitrous Express | MPN: 15020

Nitrous Express Water Methanol, Gas Stage I Boost

Sale price$593.13 USD

Nitrous Express Fuel Fittings and Adapters 15050 Item Image

Nitrous Express | MPN: 15050

Nitrous Express Water Methanol, 2.5 Gal (9.3L) Reservoir w/Fittings & Brackets

Sale price$244.69 USD

Nitrous Express Water Methanol, Diesel Stg III 15032 Photo - Primary

Nitrous Express | MPN: 15032

Nitrous Express Water Methanol, Diesel Stg III

Sale price$1,368.13 USD

5 / 5

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